Automotive Air Conditioning Information Forum

G'day Mate,
Oil quantity and liquid refrigerant migration:
After a cold night lowers the low mounted compressor housing temp the high mounted condenser warms up in the morning sun just like an agricultural tractor.
Result is that refrigerant migrates to the coldest part of the AC system (without oil ...

G'day Mate at the billabong, My 2 cents:
1) The condenser BTU rejection bogey is evaporator BTU absorption plus compressor drive input energy (horsepower in BTU).
Approx Condenser BTU = 22,220 (rated) + 7,777 (30% to 35% of evap absorption or use compressor curves at evap rating conditions ...

2 cents:
First prize for a non grill mount condenser would be a roof mount that is designed to get a boost from ram air. Avoid turbo & engine cooling air exhaust under vehicle into condenser.
I've mounted condenser on back of cab on class 6 trucks and under trunk on Model A but temp in Phoenix is ...

Might unstick frozen sanden knockoff by jogging engaged clutch both direction with 3 oz refrigeration mineral oil in crankcase
hotrodac

I have had 100% success on Class 8 trucks keeping the R-12 non barrier hoses. Recommend you eliminate the Delenair TXV inlet screen.

Bang is liquid slugging.
hotrodac

separately you described low air flow from Mark IV Monitor:
1) Slow motor: if bearings are misaligned, tap several times on each motor shaft with motor running and perpendicular to shaft.
2) If bearings are dry, drill tiny hole in end cap near bearing and squirt in oil.
blower wheels must have ...

in humid weather with humid air bypassing evap, and fresh air entering fan (Window partially down on recir.), frost will blow out of louvers.
hotrodac

Hi Grumpy,
I worked for BEHR (headquartered in Stuttgart-Feuerbach) for 14 years and they made the MB HVAC using an abundance of vacuum motors and hoses.If Antifreeze enters the vacuum system as could happen in your overheated engine, the elastomer vacuum diaphragms are damaged over time. If this ...

Must be lot's of engineering and some metallurgy in your 803 cc enhanced intake B-Popper.
hotrodac